I have trouble with my seabreeze sunnies fogging up, especially while waterstarting (heavy breathing). It is then a bit hard to see where I am going once I do get going again. Any easy solutions? (Other than not wearing them?) Thanks.
There's a few anti fog agents around you can buy, try a dive store. I've used an anti-fog cloth by 'Scott' on motocross goggles which works well but maybe not in salt water. I've also heard of a home recipe using warm water and white vinegar as a cleaning / anti fogging agent. Oh yeah possibly the easiest is a big juicy spit and rub before sailing (worth a try)
Oakley did one for the watersports sunnies few years back and it was about $20 for 10ml, and with Rain-X you get about 100 times that much. Apparently same stuff...
Spit and rub, spearfishermen and divers have been doing it since Jacque Cousteau was knee high to an air tank. It's cheap, portable and an endless supply!